Yoak: More Lewis Carroll – The Square Window

This puzzle is taken from a letter Carroll wrote to a 14-year-old girl named Helen Fielden.  Carroll writes:

I don’t know if you’re fond of puzzles, or not.  If you are, try this.  If not, never mind.  A gentlemen (a nobleman let us say, to make it more interesting) had a sitting-room with only one window in it — a square window, 3 feet high and 3 feet wide.  Now, he had weak eyes, and the window gave too much light, so (don’t you like “so” in a story?) he sent for the builder, and told hm to alter it, so as to give half the light.  Only, he was to keep it square — he was to keep it 3 feet high — and he was to keep it 3 feet wide.  How did he do it?  Remember, he wasn’t allowed to use curtains, or shutters, or coloured glass, or anything of that sort.


  1. Blaine said,

    September 11, 2009 at 12:21 pm

    Oh well, I tried to add something but the commenting system stripped it.
    [spoiler]Look at unicode character 25C7[/spoiler]

  2. jyoak said,

    September 11, 2009 at 2:03 pm

    Blaine, that’s right, and very cleverly expressed!  :-)


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